During winter months, cold and ice may
result in inaccurate real-time gage height and streamflow data.
Adjustments or deletions of this data can only be done after detailed
Funding for this site is provided by:
41°18'33", long 74°47'43" referenced to North
American Datum of 1983, Dingman Township, Pike County, PA, Hydrologic
Unit 02040104, on right bank 1,500 ft upstream from toll bridge (on
U.S. Route 206) between Montague, NJ and Milford, PA, 0.8 mi downstream
from Sawkill Creek, and at river mile 246.3.
PERIOD OF RECORD.--
March 1936 to September 1939 (gage heights
only, published as "at Milford, PA"). October 1939 to current
WDR NJ-81-2: 1980.
Water-stage recorder with telemetry. Datum of gage is
369.93 ft above NGVD of 1929. Prior to Feb 9, 1940, non-recording gage
on upstream side of left span of subsequently dismantled bridge at
present site at datum 70 ft lower.
Records good, except for estimated discharges, which
are fair. Diurnal fluctuation at medium and low flow caused by
hydroelectric plants on tributary streams. Flow regulated by Lake
Wallenpaupack, Cliff Lake, and by Pepacton, Cannonsville, Swinging
Bridge, Toronto, and Neversink Reservoirs. Discharges above 210,000
/s from rating curve extension on basis of flood-routing
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 250,000
/s, Aug 19, 1955, gage height, 35.15 ft, from rating
curve extended above 210,000 ft3
/s on basis of flood-routing
study; minimum discharge, 382 ft3
/s, Aug 24, 1954.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of Oct 10, 1903
reached a stage of 31.1 ft (from high-water mark), discharge, 217,000
PERIOD OF RECORD1.--
Water years 1956-73, 1976-78,
1991 to August 2009 (discontinued).
Cooperative Network Site Descriptor:
Delaware River Main Stem, New Jersey Department of Environmental
Protection Watershed Management Area 1. The samples on Mar 10 and May
27 included volatile organic compound and filtered pesticide
Physical measurements and samples for
laboratory analyses were provided by personnel of the NJ Department of
Environmental Protection. Determinations of dissolved ammonia,
dissolved orthophosphate, and suspended residue were performed by the
NJ Department of Health and Senior Services, Environmental and Chemical
1 Water-Quality Records
National Weather Service flood stage for
this gage is 25 ft.